April 29, 2025 — View of lava within north vent at Kīlauea volcano

On April 29, the USGS Hawaiian Volcano Observatory undertook a helicopter surveillance flight over Halema‘uma‘u at the summit of Kīlauea volcano. At the time, the ongoing eruption was between eruptive episodes (episode 18 ended on April 22). In this photo looking down towards the east, lava is seen within north vent. The south vent is located to the right of the north vent in this photo. Lava flows from recent episodes cover most of the upper half of the photo, and tephra from recent eruptive episodes blankets the bottom part of the photo, with a patch of discoloration caused by sulfur. USGS photo by N. Deligne.